How does it work?
Under the proper conditions, crystals of metal fuse together in the same way that droplets of water run together to make larger puddles on the window pane. In the case of metals, oxides (tarnish) that form naturally on most metals prevent this from happening. The solution here is to use precious or noble metals in their pure state. These do not readily oxidize so even at the high temperatures needed to induce fusion they remain free of coatings.
Form
Using simple tools and your own very talented fingers, PMC is rolled, pressed, squeezed, layered and molded, punched cut into a desired shape. Parts can be added, removed and refined as you go, making this a spontaneous and liberating process.
Firing
After it has dried, the PMC object is taken to a specific heat, this burns off the binder. This goes off as a harmless smoke. At this point the PMC is a fragile porous metallic husk. At higher temperatures the particles melt into one another to form a solid dense metal. Depending on the type of PMC, this can take from 10 minutes to two hours.
Finishing
After firing, the object can be handled like any other silver or gold item. It can be soldered, burnished, buffed, tumbled, plated, etc. to achieve whatever finish you want.
December 11, 2008
Categories: Working with PMC . . Author: debpmc . Comments: Leave a Comment